One Direction, Demi Lovato and Little Mix have been announced as the stars of BBC Radio One's Christmas Day line-up, presenting hour-long shows between 1-7pm featuring their favourite tracks.

The Vamps, Troye Sivan and Maisie Williams will also present their own shows, with DJ Greg James announcing the Christmas number one live on The Official Chart. One Direction commented 'The best present this Christmas will be coming round to Alice Levine's and sharing the day with the Radio 1 listeners', while The Vamps said 'We're so excited to give the BBC Radio 1 DJs a run for their money by taking over the decks on Christmas Day'.